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perf cs-etm: Create ETE decoder

Browse source 
If the magic number indicates ETE instantiate a OCSD_BUILTIN_DCD_ETE
decoder instead of OCSD_BUILTIN_DCD_ETMV4I. ETE is the new trace feature
for Armv9.

Testing performed
=================

* Old files with v0 and v1 headers for ETMv4 still open correctly
* New files with new magic number open on new versions of perf
* New files with new magic number fail to open on old versions of perf
* Decoding with the ETE decoder results in the same output as the ETMv4
  decoder as long as there are no new ETE packet types

Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https //lore.kernel.org/r/20210806134109.1182235-8-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
James Clark 2021-08-06 14:41:07 +01:00 committed by Arnaldo Carvalho de Melo
parent 212095f7ca
commit 779f414a48
3 changed files with 50 additions and 0 deletions
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20
tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
View file

@ -157,6 +157,20 @@ static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
config->core_prof = profile_CortexA;
}
static void cs_etm_decoder__gen_ete_config(struct cs_etm_trace_params *params,
ocsd_ete_cfg *config)
{
config->reg_configr = params->ete.reg_configr;
config->reg_traceidr = params->ete.reg_traceidr;
config->reg_idr0 = params->ete.reg_idr0;
config->reg_idr1 = params->ete.reg_idr1;
config->reg_idr2 = params->ete.reg_idr2;
config->reg_idr8 = params->ete.reg_idr8;
config->reg_devarch = params->ete.reg_devarch;
config->arch_ver = ARCH_AA64;
config->core_prof = profile_CortexA;
}
static void cs_etm_decoder__print_str_cb(const void *p_context,
const char *msg,
const int str_len)
@ -604,6 +618,7 @@ cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
const char *decoder_name;
ocsd_etmv3_cfg config_etmv3;
ocsd_etmv4_cfg trace_config_etmv4;
ocsd_ete_cfg trace_config_ete;
void *trace_config;
u8 csid;
@ -621,6 +636,11 @@ cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
decoder_name = OCSD_BUILTIN_DCD_ETMV4I;
trace_config = &trace_config_etmv4;
break;
case CS_ETM_PROTO_ETE:
cs_etm_decoder__gen_ete_config(t_params, &trace_config_ete);
decoder_name = OCSD_BUILTIN_DCD_ETE;
trace_config = &trace_config_ete;
break;
default:
return -1;
}

12
tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
View file

@ -37,11 +37,22 @@ struct cs_etmv4_trace_params {
u32 reg_traceidr;
};
struct cs_ete_trace_params {
u32 reg_idr0;
u32 reg_idr1;
u32 reg_idr2;
u32 reg_idr8;
u32 reg_configr;
u32 reg_traceidr;
u32 reg_devarch;
};
struct cs_etm_trace_params {
int protocol;
union {
struct cs_etmv3_trace_params etmv3;
struct cs_etmv4_trace_params etmv4;
struct cs_ete_trace_params ete;
};
};
@ -65,6 +76,7 @@ enum {
CS_ETM_PROTO_ETMV4i,
CS_ETM_PROTO_ETMV4d,
CS_ETM_PROTO_PTM,
CS_ETM_PROTO_ETE
};
enum cs_etm_decoder_operation {

18
tools/perf/util/cs-etm.c
View file

@ -460,6 +460,21 @@ static void cs_etm__set_trace_param_etmv4(struct cs_etm_trace_params *t_params,
t_params[idx].etmv4.reg_traceidr = metadata[idx][CS_ETMV4_TRCTRACEIDR];
}
static void cs_etm__set_trace_param_ete(struct cs_etm_trace_params *t_params,
struct cs_etm_auxtrace *etm, int idx)
{
u64 **metadata = etm->metadata;
t_params[idx].protocol = CS_ETM_PROTO_ETE;
t_params[idx].ete.reg_idr0 = metadata[idx][CS_ETMV4_TRCIDR0];
t_params[idx].ete.reg_idr1 = metadata[idx][CS_ETMV4_TRCIDR1];
t_params[idx].ete.reg_idr2 = metadata[idx][CS_ETMV4_TRCIDR2];
t_params[idx].ete.reg_idr8 = metadata[idx][CS_ETMV4_TRCIDR8];
t_params[idx].ete.reg_configr = metadata[idx][CS_ETMV4_TRCCONFIGR];
t_params[idx].ete.reg_traceidr = metadata[idx][CS_ETMV4_TRCTRACEIDR];
t_params[idx].ete.reg_devarch = metadata[idx][CS_ETE_TRCDEVARCH];
}
static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
struct cs_etm_auxtrace *etm,
int decoders)
@ -479,6 +494,9 @@ static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
case __perf_cs_etmv4_magic:
cs_etm__set_trace_param_etmv4(t_params, etm, i);
break;
case __perf_cs_ete_magic:
cs_etm__set_trace_param_ete(t_params, etm, i);
break;
default:
return -EINVAL;
}